Enter your cat's weight and choose a Benadryl formulation (liquid or tablet) to get the recommended dosage — plus the exact liquid volume or tablet fraction to give your kitty, with liquid doses adjusted for your concentration.
Recommended Dosage
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Liquid Volume (if using liquid)
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Tablet Fraction (if using tablet)
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Benadryl can be safe for cats when used under veterinary guidance. However, you should never give Benadryl to your cat without first consulting your veterinarian, as cats process medications differently than humans and dogs.
The general guideline is 1mg of Benadryl per pound of body weight. However, this can vary based on your cat's health condition, age, and other factors. Always consult your veterinarian before administering any medication.
Benadryl is an antihistamine that may be used to treat allergic reactions, motion sickness, or mild anxiety in cats. It works by blocking histamines that cause allergic symptoms like itching, swelling, and respiratory issues.
Liquid Benadryl dosage depends on your cat's weight and the concentration of the liquid. Standard liquid Benadryl contains 2.5mg per ml. Calculate the required volume by dividing the mg dose by the concentration.
A 25mg dose would only be appropriate for cats weighing around 25 pounds, which is unusually large for most cats. Average house cats (8-12 lbs) would need much smaller doses. Never give a full 25mg tablet without veterinary approval.
Common side effects include drowsiness, dry mouth, and decreased appetite. More serious reactions can include difficulty breathing, rapid heartbeat, or behavioral changes. Contact your vet immediately if you notice any adverse reactions.
Benadryl is typically given every 8-12 hours, but frequency should be determined by your veterinarian based on your cat's specific condition and response to treatment. Never exceed the recommended frequency or duration.